<s>
BiModem	B-Protocol
was	O
one	O
of	O
the	O
last	O
file	B-Protocol
transfer	I-Protocol
protocols	I-Protocol
developed	O
for	O
use	O
in	O
bulletin	B-Application
board	I-Application
systems	I-Application
.	O
</s>
<s>
Unlike	O
the	O
predominant	O
protocols	O
of	O
the	O
day	O
(	O
XMODEM	B-Protocol
,	O
YMODEM	B-Protocol
,	O
ZMODEM	B-Device
)	O
,	O
BiModem	B-Protocol
allowed	O
BBS	O
users	O
to	O
upload	O
and	O
download	O
files	O
at	O
the	O
same	O
time	O
.	O
</s>
<s>
BiModem	B-Protocol
never	O
received	O
widespread	O
acceptance	O
.	O
</s>
<s>
It	O
had	O
to	O
be	O
manually	O
patched	O
into	O
both	O
BBS	O
and	O
terminal	B-Application
emulator	I-Application
packages	O
,	O
and	O
it	O
was	O
incompatible	O
with	O
some	O
programs	O
.	O
</s>
<s>
It	O
was	O
released	O
in	O
the	O
end	O
of	O
1989	O
,	O
and	O
before	O
it	O
saw	O
widespread	O
use	O
,	O
HS/Link	B-Protocol
was	O
created	O
which	O
was	O
easily	O
added	O
to	O
BBSes	B-Application
and	O
allowed	O
for	O
file	O
lists	O
and	O
bidirectional	O
transfers	O
.	O
</s>
<s>
Part	O
of	O
the	O
problem	O
with	O
BiModem	B-Protocol
is	O
that	O
very	O
few	O
sysops	O
and	O
users	O
wanted	O
to	O
wade	O
through	O
the	O
instructions	O
.	O
</s>
<s>
To	O
simplify	O
installation	O
,	O
a	O
ZIP	O
file	O
with	O
BiModem	B-Protocol
and	O
a	O
preconfigured	O
shareware	O
copy	O
of	O
ProComm	B-Protocol
with	O
a	O
batch	O
file	O
to	O
run	O
BiModem	B-Protocol
was	O
created	O
.	O
</s>
<s>
The	O
final	O
version	O
(	O
BiModem	B-Protocol
1.25	O
)	O
was	O
released	O
in	O
1991	O
.	O
</s>
<s>
In	O
1995	O
a	O
program	O
was	O
released	O
in	O
Argentina	O
called	O
BiModem	B-Protocol
Pro	O
4.0	O
.	O
</s>
<s>
This	O
was	O
a	O
user-modified	O
version	O
of	O
BiModem	B-Protocol
1.25	O
with	O
some	O
minor	O
bugfixes	O
.	O
</s>
